:root{--bg: #ffffff;--side: #f7f7f8;--text: #0f172a;--muted: #64748b;--border: #e5e7eb;--accent: #c8102e;--accent-soft: #fdecef;--bot: #f3f4f6;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,Noto Sans JP,Noto Sans Devanagari,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}button{font:inherit;cursor:pointer}.muted{color:var(--muted)}.small{font-size:12px}.pad{padding:8px 12px}.layout{display:flex;height:100%}.sidebar{width:280px;flex-shrink:0;background:var(--side);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.sidebar-head{display:flex;align-items:center;gap:10px;padding:16px;border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:15px}.brand span{color:var(--accent)}.new-chat{margin:12px;padding:10px 12px;text-align:left;background:#fff;border:1px solid var(--border);border-radius:10px;color:var(--text)}.new-chat:hover{border-color:var(--accent)}.chat-list{flex:1;overflow-y:auto;padding:0 8px}.chat-item{display:flex;align-items:center;border-radius:8px}.chat-item:hover,.chat-item.active{background:#e9eaec}.chat-link{flex:1;min-width:0;text-align:left;background:none;border:0;padding:9px 10px;color:var(--text);display:flex;flex-direction:column;gap:2px}.chat-title{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-time{font-size:11px;color:var(--muted)}.chat-delete{background:none;border:0;color:var(--muted);font-size:18px;padding:4px 10px;visibility:hidden}.chat-item:hover .chat-delete{visibility:visible}.sidebar-foot{padding:12px 16px;font-size:12px;color:var(--muted);border-top:1px solid var(--border)}.main{flex:1;min-width:0;display:flex;flex-direction:column;min-height:0}.topbar{display:flex;align-items:center;gap:10px;padding:12px 20px;border-bottom:1px solid var(--border)}.topbar-title{font-weight:600;flex:1}.menu{display:none;background:none;border:0;font-size:20px;padding:4px 6px}.status{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:6px}.status i{width:8px;height:8px;border-radius:50%;background:#f59e0b;display:inline-block}.status.connected i{background:#10b981}.center{flex:1;display:grid;place-items:center}.logo{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;display:grid;place-items:center;font-size:13px;letter-spacing:.5px;flex-shrink:0}.logo.sm{width:28px;height:28px;font-size:11px}.logo.lg{width:64px;height:64px;font-size:22px}.empty{flex:1;overflow-y:auto;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:32px 16px;text-align:center}.eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-top:8px}.empty h1{margin:0;font-size:32px}.greeting{margin:0 0 8px;max-width:620px;color:var(--muted);line-height:1.5}.empty .composer{width:100%;max-width:760px}.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%;max-width:760px;margin-top:6px}.topic{text-align:left;background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:3px}.topic:hover{border-color:var(--accent);background:var(--accent-soft)}.topic-title{font-weight:600;font-size:14px}.topic-note{font-size:12px;color:var(--muted)}.thread{flex:1;overflow-y:auto}.thread-inner{max-width:820px;margin:0 auto;padding:24px 16px 12px;display:flex;flex-direction:column;gap:14px}.bubble{padding:10px 14px;border-radius:16px;line-height:1.55;font-size:15px;overflow-wrap:anywhere}.bubble.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px;max-width:75%;white-space:pre-wrap}.bubble.user.pending{opacity:.7}.bot-row{display:flex;gap:10px;align-items:flex-start;max-width:85%}.bubble.bot{background:var(--bot);border-bottom-left-radius:4px;min-width:0}.bubble.bot p{margin:0 0 8px}.bubble.bot p:last-child{margin-bottom:0}.bubble.bot ul,.bubble.bot ol{margin:4px 0 8px;padding-left:20px}.bubble.bot a{color:var(--accent)}.bubble.bot table{border-collapse:collapse;margin:6px 0;font-size:14px;display:block;overflow-x:auto}.bubble.bot th,.bubble.bot td{border:1px solid var(--border);padding:4px 8px;text-align:left}.typing{display:flex;gap:4px;padding:14px}.typing i{width:7px;height:7px;border-radius:50%;background:#9ca3af;animation:blink 1.2s infinite}.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}@keyframes 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